Engraving-machine.



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(Application filed Apr. 25, 1899.) (No Model.) 2 Sheets-Sheet 2.

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NTTED STATES PATENT Prien.

CHARLES WALTER PASHLEY, OF BROADHEATH, ENGLAND, ASSIGNOR TO THE LINOTYPECOMPANY, LIMITED, OF LONDON, ENGLAND.

ENGRAVlNG-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 671,092, dated April 2,1901.

Application filed April 2 5, l 8 9 9 To @ZZ whom t may concern.-

Be it known that I, CHARLES WALTER PASHLEY, of Broadheath, in the countyof Chester, England, have invented certain new and useful Improvementsin and Connected with Engraving-Machines; and I do hereby declare thefollowing to a full, clear, and eX- act description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the saine.

The present invention relates to improvements in the joints and bearingsof the engraving-machine described in the speciiication of BritishLetters Patent No. 11,938, dated June 19, 1895.

A is the bed-plate of the machine; B, the standard, upon which is fixedthe stationary plate B', in which reciprocate the frame F' and block E'.

V is the vise, fast on the top of the reciprocating top block E'. Theconstruction and operation of this vise form no part of my presentinvention and are therefore not particularly shown or described herein.

I the standard that carries the tool-holders t.

C is a xed standard carrying a bracket C', vertically adjustablethereon, and from which hangs the tracer-rod D by a ball-joint o.

L is the pattern, and L' the pattern-holder.

K K' are two links connected to the tracerrod D and having their outerends respectively joined to the outer ends of a pair of levers G G',fulcrumed upon a bracket H', secured by lugs C" ou the standard B. Eachlever G G is connected to the reciprocating top block E' by a pivot-pinP', as described in greater detail farther on.

There are several parts of the above machine included in Figures 1 and 2which are not affected by the present invention and which need nottherefore be described in this specification. Full details of .theirconstruction and operation will be found in the specication abovementioned.

Referring to the accompanying drawings, which are to be taken as part ofthis specification and read therewith, Fig. l is a side elevation fromthe right hand of the engraving-machine above mentioned; Fig. 2, a plantaken along the line 2 2 of Fig. 1; Fig. 3, a

Serial No. 714,392. (No model.)

detail plan of the first part of the invention; Fig. 4, a sectional planon the line 6 (i of Fig. 3, including part of the bracket that supportsthe fulcrum-pin; Fig. 5, a plan of the split bush of the fulcrum-pin;Fig. 6, a vertical section on the line 9 9 of Fig.5; Fig. 7, a plan ofthe tapered internal bush of the fulcrumpin; Fig. 8, a vertical sectionon the line 11 1l of Fig. 7; Fig. 9,aplan of a leverebush; Fig. 10, avertical section on the line 18 13 of Fig: 9.

The invention consists in an improved device for taking up wear at thefulcruin-pin I-I of the two levers G G' between it and them. It isillustrated in Figs. 3 to l0. Instead of that pin H being parallelthroughout its length, as heretofore, it has a head h, the diameter ofwhich gradually increases from its junction with the shank 7i', asclearly shown in Fig. et.

77,2 is a bush tapered externally in the opposite direction to the headh and fitting on the shank h.

h3 is a slot in the internal face of the bush h2 and parallel with itsaxis.

h4 is a pin projecting from the shank h' into the slot h3 to prevent thebush 72,2 turning about the said shank and t-o allow them both to moveparallel with their common axis in either direction.

h5 is a bush in the end of the lever G' to receive the above-describedbush h2, and h6 is a similar bush in the end of the lever G to receivethe head t, both bushes being held fast to their respective lever ends.

It7 is a split bush screwed into the bracket H.

hg is a screw-threaded nut on the screwthreaded end of the shank h'.

When the bushes h2 h5 7i and the pin-head h are new, the latter and thebush h2 are at some distance apart, as shown in Fig. 4E, that distancebeing equal to the maximum takeup that will be possible. The split bushk7 is screwed down through the bracket H to push the bush h2 into thebush h5 far enough to take up the wear in respect of `the lever G', andthe nut hs is screwed down the shank h after the bush 717 to pull thetapered head 72, into the correspondiugly-tapered bush h6 to take up thewear in respect to the lever G. It is preferred that the bushes h5 h6should respectively project beyond both sides of the IOO respectivelevers G Gr', as shown in Fig. 4t, in order that both the pin-head h andthe bush h2 may always have bearings as deep as the respective levers GG are thick.

I claim- In an engraving-machine of the class specied, the combinationof two levers having bushes tapered in opposite directions fast on them,a supportiugbracket, a fulcrun1-pin supported thereby and having aparallel shank Where it passes through the said bracket and the bush inthe upper of the tWo levers, and a tapered head fitting in the bush inthe bottom lever, an oppositely-tapered bush between the said shank andthe bush in the upper lever and loose upon the said shank, and a nutupon the screw-threaded nose of the fulcrum-pin on the opposite side ofthe supporting-bracket and adapted by being turned down the said pintoward the tapered head of it to draw the bushes in the two levers to-Ward each other.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing Witnesses.

CHARLES WALTER PASHLEY.

Witnesses:

THOMAS TAYLOR, JOHN EDWARD STANLEY.

